It's a time when I let out my musical talent. All emotion, passion, composition to songs and of my own. I let out every single piece of emotion that has been hiding behind my mind. I write poems and stories, I let out all of my imagination, my very own world that I live in. I let my anger and worries out through harsh exercise till i'm absolutely satisfied and energized. I sit silent, let my ears hear the nothingness, the blank makes me feel the warmth and calm. I release absolutely everything so i'm ready to start over the new chapter of my life.

May seem cliché but it's what I do. I do it once a year whenever i'm by myself in the house for several hours.

For me I go into my crazy fan-girl mode which consists a lot of rolling around and squealing. ORZ I'm not proud of it at all.

Sorry if this topic was already discussed/used D: OTL

I do that regardless of who is home or not. Right now I'm watching M Countdown and I put it up so loud that my Oppa gave up trying to listen to his own TV and came to watch with me. No doubt when Dalmatian, B.A.P, A-JAX and C-Clown come on the whole neighbourhood will know. LOOL, okay that's a tiny bit of an exaggeration but still, there's no shame in being a fan girl ｡◕‿◕｡

If my music is on, it gets louder, and I dance, dance, DANCE EVERYWHERE, and I sing in my shitty tone-deaf voice without worries, drink from the carton, and leave I the door open when I relieve myself and I wear what ever the hell I want, AND I experiment with baking.
Made strawberry and blueberry vanilla muffins cut in half sandwiched with Nutella and melted marshmallows on top one time (yum!) Then I might go for a run so I don't feel fat then I'll paint and re-paint my nails a trillion times while watching tv catch-up or Crunchyroll.
Or if I'm bored I'll feel inspired to do something useful, so I might re-arrange my room and find all the crap from last decade. Or I might watch some yaoi anime without worrying someone will walk in and think I have some kind of problem.

Ah yes, I tend to fangirl a bit more when I'm home alone XD I also like to sing (never dance though). Since it's quiet and I don't have to worry about people nagging at me, I'll do a lot of tidying up. Otherwise, I just sit back in my favorite chair in the living room and soak up the blessed silence...

I do that regardless of who is home or not. Right now I'm watching M Countdown and I put it up so loud that my Oppa gave up trying to listen to his own TV and came to watch with me. No doubt when Dalmatian, B.A.P, A-JAX and C-Clown come on the whole neighbourhood will know. LOOL, okay that's a tiny bit of an exaggeration but still, there's no shame in being a fan girl ｡◕‿◕｡

^You're doing EXACTLY what I am doing right now. I watch it for the fun of it though, no longer a faithful kpop fan after DBSK disbanded.
My heart stays with DB5K. :>

Back to the topic. I don't really do anything weird when I'm at home alone but I do create a huge mess when no one is around. There was a time when I wanted to take a book from my bookshelf and ended up destroying the whole freaking shelf. The book was stuck and as I was trying to pull it out the whole book shelf tumbled down and knocked me over. It was a scary experience..

At home alone, Happy hour... This is the time, i video myself and rehearsing all my presentation and try to look cute or serious and watch it myself and review. It's weird and i find it also weird and oh taking photos as well set up like stolen

I climb onto the kitchen counter, fill the basin with warm water, add bath salts, and soak my feet in the kitchen sink.

My house is on a hill, so I usually get a really nice view from the nearby window. There's a cabinet behind where I sit on the counter that is the perfect backrest. I will soak my feet and read until people come back home. Haven't been doing this much since my grandma is always home now, though.